An ultrasonic cool-mist humidifier shaped like a friendly penguin is whisper-quiet and features variable output control for customizable relief from dry air.What it does: It offers variable output settings and an adjustable 360-degree mist lid. The mist output is perfect for humidifying rooms up to 500 square feet.Additional features: The penguin humidifier runs up to 24 hours and it is also equipped with an automatic shut-off safety feature that turns the unit off when the water runs out. The easy-to-clean design features a detachable bottom fill tank, removable water level sensor and cap.Sizing information: 9" x 9" x 12.75"; holds one gallon. No filter required BPA-free Plastic Imported